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|Vub| from exclusive semileptonic B--> rho decays

Record type: Article

We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.

We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays

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Citation

Flynn, Jonathan M., Nakagawa, Yoshiyuki, Nieves, Juan and Toki, Hiroshi (2008) |Vub| from exclusive semileptonic B--> rho decays Physics Letters B, 675, pp. 326-331. (doi:10.1016/j.physletb.2009.04.037).

More information

Published date: 15 December 2008
Keywords: high energy physics, phenomenology

Identifiers

Local EPrints ID: 144007
URI: http://eprints.soton.ac.uk/id/eprint/144007
ISSN: 0370-2693
PURE UUID: 42e3f6f2-44fd-4d53-8be7-3ea2f9e2946d
ORCID for Jonathan M. Flynn: ORCID iD orcid.org/0000-0002-6280-1677

Catalogue record

Date deposited: 14 Apr 2010 13:59
Last modified: 18 Jul 2017 23:08

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Contributors

Author: Jonathan M. Flynn ORCID iD
Author: Yoshiyuki Nakagawa
Author: Juan Nieves
Author: Hiroshi Toki

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